2019
DOI: 10.3847/1538-4357/ab1f66
|View full text |Cite
|
Sign up to set email alerts
|

Confirmation of the Gaia DR2 Parallax Zero-point Offset Using Asteroseismology and Spectroscopy in the Kepler Field

Abstract: We present an independent confirmation of the zero-point offset of Gaia Data Release 2 (DR2) parallaxes using asteroseismic data of evolved stars in the Kepler field. Using well-characterized red giant branch (RGB) stars from the APOKASC-2 catalogue we identify a Gaia astrometric pseudo-color (ν eff )-and Gaia G-band magnitude-dependent zero-point offset of seis − Gaia = 52.8±2.4 (rand.)±8.6 (syst.)−(150.7±22.7)(ν eff −1.5)−(4.21±0.77)(G−12.2)µas, in the sense that Gaia parallaxes are too small. The offset is … Show more

Help me understand this report
View preprint versions

Search citation statements

Order By: Relevance

Paper Sections

Select...
1
1
1
1

Citation Types

15
131
1

Year Published

2019
2019
2022
2022

Publication Types

Select...
9

Relationship

0
9

Authors

Journals

citations
Cited by 192 publications
(147 citation statements)
references
References 68 publications
15
131
1
Order By: Relevance
“…In our analysis, we did not consider any zero-point bias in the parallaxes of Gaia DR2, as found by some authors (Lindegren et al 2018;Arenou et al 2018;Stassun & Torres 2018;Zinn et al 2019), except in Sect. 4.3, where we repeat our main calculation including a non-zero value of the zeropoint to prove that this effect is negligible in our results.…”
Section: Data Selectionmentioning
confidence: 99%
“…In our analysis, we did not consider any zero-point bias in the parallaxes of Gaia DR2, as found by some authors (Lindegren et al 2018;Arenou et al 2018;Stassun & Torres 2018;Zinn et al 2019), except in Sect. 4.3, where we repeat our main calculation including a non-zero value of the zeropoint to prove that this effect is negligible in our results.…”
Section: Data Selectionmentioning
confidence: 99%
“…We assume this shift in all that follows. The particular value for the parallax zero-point shift was chosen from a wide array offered in the literature (Lindegren et al 2018;Stassun & Torres 2018;Zinn et al 2019) such that our value is a "middle-ground" choice. The particular choice of shift has no bearing on the final results as our data is quite close (the mean distance to a star in our sample is 0.94 kpc, with ∼60% of the stars within 1 kpc), and thus does not bring previously negative parallaxes into the analysis.…”
Section: Data Acquisitionmentioning
confidence: 99%
“…By the study of a sample of RR-Lyrae, the parallax zero point was found to be 0.057±0.0034 mas Muraveva et al (2018) It is therefore undoubtable that there is a non-zero parallax offset in the Gaia DR2 between 0.2 and 0.8 mas. There is a significant difference in the parallax zero-points derived from fainter and bluer quasars (0.029 mas, Lindegren et al (2018)) and from brighter and redder sources like Cepheids (0.046 mas, Riess et al (2018); 0.048 mas, Groenewegen (2018)), RR Lyrae (0.057 mas, Muraveva et al (2018)), or red giants and red clump stars (0.0528 mas, Zinn et al (2019); 0.0517 mas, Khan et al (2019); and 0.03838 mas, Hall et al (2019)).…”
Section: Dmt Applicationmentioning
confidence: 99%
“…reported a parallax offset of 0.082±0.033 mas using a sample of eclipsing binaries. In 2019, many more studies dealt with the Gaia parallax zero point and the value varies between 0.030 and 0.1 mas (0.031±0.11mas,Graczyk et al (2019); 0.054±0.006mas,Schönrich et al (2019); 0.0523±0.002 mas,Leung & Bovy (2019); 0.075±0.029mas,Xu et al (2019); 0.0517±0.0008mas,Khan et al (2019); 0.03838 +0.01354 −0.01383 mas,Hall et al (2019); and 0.0528±0.0024 mas,Zinn et al (2019)).…”
mentioning
confidence: 99%